Page 39 - Blog
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August 07, 2017In last October’s newsletter, Sterlitech announced the availability of kits for performing the Kato-Katz analysis technique for Soil-Transmitted Helminthiasis (STH) in field-based applications, signifying the first time that these kits were available from a source in the United States. Prior to this, the efforts of research groups and health organizations could be hampered by limited availability. Recognizing the global health need, Sterlitech developed the kits to ensure a consistent and reliable supply. We are pleased to announce that, in less than a year, Sterlitech has already supplied enough Kato-Katz Kits to perform 87,000 diagnostic tests.
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August 07, 2017Filtering organic solvents for applications such as HPLC buffer prep can be challenging in order to ensure chemical compatibility with filters (PVDF, Nylon, or PTFE), preserving longevity of an HPLC column, or containment of toxic fumes, but finding a suitable and comprehensive vacuum system is now easier than ever.
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July 07, 2017Membrane filtration is an effective way to remove pollutants and microorganisms from water and wastewater. However, membrane fouling lowers efficiency over time when considering rejection values and water flux. Fouling is typically biological or particulate; fouling rate is a function of the membrane pore size relative to the size of the foulants and also the interactions between the membrane and the foulants. Membrane surface charges and affinity for water directly affect membrane biofouling intensity. Applying electric charge to the membrane surface is one of the methods that has been recently trending for mitigating biofouling [1]. Use of an electroconductive nano-carbon-based membrane has also been reported for mitigating membrane fouling by integrating membrane filtration [2].
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July 06, 2017Did you know that Sterlitech offers 16 different material types of microporous membrane and media disk filters? The available combinations of materials, pore, and disk sizes, equates to well over 1000 unique filters. To many, that may sound like an overwhelming selection to choose from, whether you’re unsure where to start, have narrowed down your selection to one or a few material types, or have a clear range of pore sizes to stay within for optimal separation; in any case, we can help to further refine your selection.
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July 06, 2017There’s no shortage of news stories on a tiny bacterium continuing to cause big trouble; Legionella. In a recent search of Google News, 1800 different stories from across the globe are revealed for June of this year when searched strictly against the term “Legionella.” Illustrations of how serious a threat is this bacterium can be are seen across the variety of the news stories; from people becoming infected after using contaminated showers in gyms, hotels, hospitals, to babies born in birthing pools, basic residential water supplies, and even a simple backyard garden hose. So, what is this nasty little microorganism, and why is it still causing trouble? To look closer, let’s revisit two newsletter stories Sterlitech originally published back in December 2010 and April 2011 respectively.
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July 06, 2017NADIR flat sheet membranes from Microdyn-NADIR are now available. NADIR Polyethersulfone (PES) membranes are offered in a wide range of MWCO: 4, 5, 10, 20, 30, 50, and 150kDa in addition to the 150kDa Polyvinylidene fluoride (PVDF) and 500kDa Regenerated Cellulose (RC) membranes. Addition of NADIR membranes to the Sterlitech product line fills the gaps in our membrane flat sheet offering MWCO spectrum. NADIR membranes are designed for municipal and industrial applications. These are permanently hydrophilic and chemically resistant, increasing performance and longevity of the membranes and significantly reducing fouling.
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June 15, 2017Purchase of each package listed on the sheet below includes one carboy, the standard closed-cap and open-cap adapter as well as two additional Quick-Connect VersaCaps, one with 2 hose-barb ports and one with 3 hose-barb ports for easy filling, siphoning, and/or venting.
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June 14, 2017Researchers frequently ask, “what is the purpose of the shims and spacers for use with the membrane test cells, and do I need them?” Curious to know more? In response to this common question Sterlitech’s own Sepideh Jankhah explores this topic in her recently published Paper, which investigates the hydrodynamic conditions in a bench-scale membrane flow-cell (CF042 Cell). It looks at the ways in which parameters such as the feed crossflow velocity, geometry of the cell, and feed spacers, affect system hydrodynamics.
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June 13, 2017In the area of a former military building complex in the Chaoyang District of Beijing is a unique and thriving artistic community. In the middle of this art district, is a strange 7-meter tall tower shaped like an avant-garde metallic pineapple. Designed by Dutch artist Daan Roosegaarde, it is both an artistic creation and a functional tool meant to test a possible solution for Beijing’s worsening air pollution. The tower is a giant silver-colored ionizer and particulate trap designed to pull in and hold tiny pollutants, known collectively as PM 2.5’s. The tower works by releasing charged ions into the air nearby, causing the PM 2.5 particles to become trapped on the metallic fins as they are pulled from the air.
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June 13, 2017Last month we examined filter selection strategies for maximizing service life in continuous use applications. In this 3rd installment, we will examine the use of prefilters to extend service life.
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